ClinVar Miner

Submissions for variant NM_020822.3(KCNT1):c.1139C>T (p.Ser380Phe)

gnomAD frequency: 0.00001  dbSNP: rs765193021
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000532844 SCV000652901 uncertain significance Developmental and epileptic encephalopathy, 14; Autosomal dominant nocturnal frontal lobe epilepsy 5 2019-10-29 criteria provided, single submitter clinical testing In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). The frequency data for this variant (rs765193021) in the population databases is unreliable, as metrics indicate poor quality at this position in the ExAC database. This variant has not been reported in the literature in individuals with a KCNT1-related disease. This sequence change replaces serine with phenylalanine at codon 380 of the KCNT1 protein (p.Ser380Phe). The serine residue is moderately conserved and there is a large physicochemical difference between serine and phenylalanine.

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